update existing qas.json

app.py

@@ -65,8 +65,10 @@ def read_qs():
         with open(f"{directory}/qas.json", "r", encoding="utf-8") as f:
             qas = json.loads(f.read())
         print(f"read {len(qas)} query-responses from qas.json")
+        qas = [{"q":qa["q"], "a":qa["a"]} for qa in qas if qa["a"] is not None]
+        print(f"keep {len(qas)} query-responses from qas.json")
         
-        existed_qs = collections.Counter([qa["q"] for qa in qas if qa["a"] is not None])
+        existed_qs = collections.Counter([qa["q"] for qa in qas])
         remained_qs = []
         for q in qs:
             if existed_qs[q]>0: